CN103422837A - Method for generating pipeline in shaft - Google Patents
Method for generating pipeline in shaft Download PDFInfo
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- CN103422837A CN103422837A CN2013103710671A CN201310371067A CN103422837A CN 103422837 A CN103422837 A CN 103422837A CN 2013103710671 A CN2013103710671 A CN 2013103710671A CN 201310371067 A CN201310371067 A CN 201310371067A CN 103422837 A CN103422837 A CN 103422837A
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- filling
- filler
- sand
- inner tube
- sleeve pipe
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Abstract
The invention discloses a method for generating a pipeline in a shaft. The method comprises the following steps: pigging to the bottom of a casing according to the requirement of the conventional well repair operation procedure; placing a casing scrapper of a corresponding outer diameter for scrapping the casing, and performing well flushing; performing sand wash below the lower boundary of an oil reservoir; connecting an oil pipe, the upper part of a filling device, the lower part of the filling device, an inner pipe and a sieve pipe into the casing in sequence; filling a filler between a ground layer and a fusible coating; after filling, separating the upper part of the filling device from the lower part of the filling device; lifting a pipe column above the upper part of the filling device; after the filler is consolidated, forming an empty ring between the filler and the inner pipe; fishing out the lower part of the filling device, the inner pipe and the sieve pipe to form a regular pipeline; making the filler form a sand-blocking pipeline in the shaft which corresponds to a sand outlet ground layer position, wherein liquid flow can flow out, but sand cannot pass through; forming two sand-blocking barriers in the ground layer and the shaft. According to the method, problems existing in the prior art are solved, the sand prevention success rate can be increased, and the economic benefit of a sand prevention well is increased.
Description
Technical field
The invention belongs to the oil field stratum sand-preventing process, is a kind of method of pipeline that generates in pit shaft specifically.
Background technology
In the sand control of stratum, current existing technology is, in squeezing filling tubing string lower going-into-well cylinder, after installing ground installation, from the squeezing tubing string to stratum squeezing filling cementing material, after it solidifies, then be lowered to drill bit material fixed in pit shaft bored and removes.The shortcoming of this technology is: in the squeezing construction, due to the difference of the vertical direction such as flow velocity, stratum permeability, can cause cementing material to enter skewness in stratum, can not form effective barrier between stratum and pit shaft, can not prevent that sand from flowing out from stratum, cause the sand control failure.
Summary of the invention
The purpose of this invention is to provide a kind of method that generates pipeline in pit shaft, in the cementing material pit shaft, form pipeline, block the stratum sand and enter pit shaft.
The object of the present invention is achieved like this: generate the method for pipeline in a kind of pit shaft, the steps include:
1. under the requirement of workover treatment rules routinely the drift size gauge tool drifting of corresponding external diameter to the bottom of sleeve pipe (1);
2. the casing scraper scraping sleeve pipe of the lower corresponding external diameter of the requirement of workover treatment rules routinely is to well-flushing behind the bottom of sleeve pipe (1);
3. visit sand washing to the oil reservoir lower bound;
4. oil pipe (2), device for filling top (3), device for filling bottom (4), inner tube (5), screen casing (8) are connected successively and be lowered in sleeve pipe (1), wherein inner tube (5) surface coats fusibility coating (6);
5. filler (7) is fills up between stratum and fusibility coating (6), the upper bound of filler (7) is under device for filling bottom (4), after sand off, according to the using method of device for filling used top (3), device for filling bottom (4), device for filling top (3) are separated with device for filling bottom (4), and propose the tubing string on action top (3);
6. closing well is waited and is coagulated, and after thing to be filled (7) is fixed, fusibility coating (6) melts again, makes to form idle loop between filler (7) and inner tube (5);
7. carry on after being lowered to engaging tool and docking with device for filling bottom (4), device for filling bottom (4), inner tube (5), screen casing (8) are pulled out, it is upper that filler (7) is cemented in sleeve pipe (1), filler (7) inner core formation rule pipeline.
Described pipeline is comprised of sleeve pipe (1), oil pipe (2), device for filling top (3), device for filling bottom (4), inner tube (5), screen casing (8); Oil pipe (2), device for filling top (3), device for filling bottom (4), inner tube (5), screen casing (8) connect successively and are lowered in sleeve pipe (1), inner tube (5) is in the oil reservoir position, and inner tube (5) is connected front surface and coats fusibility coating (6) with screen casing (8) with device for filling bottom (4).
Visit the bottom of sand washing to sleeve pipe (1), with the oil field well-flushing of purifying waste water.
The invention has the beneficial effects as follows: filler is formed with the pipeline of sand-blocking function in the pit shaft at corresponding sanding formation position, liquid stream can flow out, sand can not pass through, form twice sand block barrier in stratum, pit shaft, solved that prior art exists problem, can improve the sand control success rate, improve the economic benefit of sand proof well.
The accompanying drawing explanation
Accompanying drawing 1 is the state diagram after filling filler of the present invention.
Accompanying drawing 2 is the piping drawings that generate in pit shaft after construction finishes.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described.
Generate the method for pipeline in a kind of pit shaft, the steps include: the bottom of the drift size gauge tool drifting of corresponding external diameter under the requirement of 1. workover treatment rules routinely to sleeve pipe, press SY/T5587.5-2004 " conventional workover treatment rules the 5th part: the underground work pit shaft is prepared " standard construction;
2. the casing scraper scraping sleeve pipe of the lower corresponding external diameter of the requirement of workover treatment rules routinely, to well-flushing behind the bottom of sleeve pipe, is pressed SY/T5587.5-2004 " conventional workover treatment rules the 5th part: the underground work pit shaft is prepared " standard construction;
3. visit sand washing to the oil reservoir lower bound;
4. oil pipe 2, device for filling top 3, device for filling bottom 4, inner tube 5, screen casing 8 are connected and are lowered in sleeve pipe 1 successively, wherein inner tube 5 surfaces coat fusibility coating 6, screen casing 8 is on the sand face, as there is no sand in pit shaft, need first to back-up sand in pit shaft to appropriate location (below the lower bound of stratum);
5. filler 7 is fills up between stratum and fusibility coating 6, placement method is same as the prior art, the upper bound of filler is under device for filling bottom 4, after sand off, according to the using method of device for filling used top 3, device for filling bottom 4, device for filling top 3 is separated with device for filling bottom 4, separation method has hydraulic pressure and machinery rotation, and proposes the tubing string on device for filling top 3;
6. closing well is waited and is coagulated, and more than curing time 12h, after thing 7 to be filled is fixed, fusibility coating 6 melts again, makes to form idle loop between filler 7 and inner tube 5;
7. be lowered to engaging tool with device for filling bottom 4, dock after on carry, device for filling bottom 4, inner tube 5, screen casing 8 are pulled out, and filler 7 is cemented on sleeve pipe 1, filler 7 inner core formation rule pipelines, formed idle loop between filler 7 and inner tube 5, inner tube 5, screen casing 8 can propose smoothly;
8. visit the bottom of sand washing to sleeve pipe 1, the bottom sand of sleeve pipe 1 is removed totally, in order to oil well energy long-term production.With the oil field well-flushing of purifying waste water, make pit shaft thoroughly clean again, the tool of production reliably working be lowered to while guaranteeing to produce.
At the scene the inside of sleeve pipe 1 is called to pit shaft.
Described pipeline is comprised of sleeve pipe 1, oil pipe 2, device for filling top 3, device for filling bottom 4, inner tube 5, screen casing 8; Oil pipe 2, device for filling top 3, device for filling bottom 4, inner tube 5, screen casing 8 connect successively and are lowered in sleeve pipe 1, and inner tube 5 is in the oil reservoir position, and inner tube 5 is connected front surface and coats fusibility coating 6 with screen casing 8 with device for filling bottom 4.
Claims (3)
1. the interior method that generates pipeline of pit shaft, is characterized in that the steps include:
1. under the requirement of workover treatment rules routinely the drift size gauge tool drifting of corresponding external diameter to the bottom of sleeve pipe (1);
2. the casing scraper scraping sleeve pipe of the lower corresponding external diameter of the requirement of workover treatment rules routinely is to well-flushing behind the bottom of sleeve pipe (1);
3. visit sand washing to the oil reservoir lower bound;
4. oil pipe (2), device for filling top (3), device for filling bottom (4), inner tube (5), screen casing (8) are connected successively and be lowered in sleeve pipe (1), wherein inner tube (5) surface coats fusibility coating (6);
5. filler (7) is fills up between stratum and fusibility coating (6), the upper bound of filler (7) is under device for filling bottom (4), after sand off, according to the using method of device for filling used top (3), device for filling bottom (4), device for filling top (3) are separated with device for filling bottom (4), and propose the tubing string on action top (3);
6. closing well is waited and is coagulated, and after thing to be filled (7) is fixed, fusibility coating (6) melts again, makes to form idle loop between filler (7) and inner tube (5);
7. carry on after being lowered to engaging tool and docking with device for filling bottom (4), device for filling bottom (4), inner tube (5), screen casing (8) are pulled out, it is upper that filler (7) is cemented in sleeve pipe (1), filler (7) inner core formation rule pipeline.
2. generate the method for pipeline in a kind of pit shaft according to claim 1, it is characterized in that: described pipeline is comprised of sleeve pipe (1), oil pipe (2), device for filling top (3), device for filling bottom (4), inner tube (5), screen casing (8); Oil pipe (2), device for filling top (3), device for filling bottom (4), inner tube (5), screen casing (8) connect successively and are lowered in sleeve pipe (1), inner tube (5) is in the oil reservoir position, and inner tube (5) is connected front surface and coats fusibility coating (6) with screen casing (8) with device for filling bottom (4).
3. generate the method for pipeline in a kind of pit shaft according to claim 1, it is characterized in that: visit the bottom of sand washing to sleeve pipe (1), with the oil field well-flushing of purifying waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103710671A CN103422837A (en) | 2013-08-23 | 2013-08-23 | Method for generating pipeline in shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103710671A CN103422837A (en) | 2013-08-23 | 2013-08-23 | Method for generating pipeline in shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103422837A true CN103422837A (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103710671A Pending CN103422837A (en) | 2013-08-23 | 2013-08-23 | Method for generating pipeline in shaft |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353419A (en) * | 1980-11-28 | 1982-10-12 | Texaco Inc. | Method for manufacturing a well production and sand screen assembly |
| WO2008002679A2 (en) * | 2006-06-29 | 2008-01-03 | Bj Services Company | Method of repairing failed gravel packs |
| CN101929329A (en) * | 2009-06-26 | 2010-12-29 | 大港油田集团有限责任公司 | Gravel filling sand control device of horizontal well screen pipe |
| CN101705809B (en) * | 2009-12-11 | 2012-12-26 | 安东石油技术（集团）有限公司 | Segmented current controlling method of current controlling filter pipe column of oil-gas well having sand control pipe |
| CN103089194A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | Method for completing well by cementing top of expandable screen |
-
2013
- 2013-08-23 CN CN2013103710671A patent/CN103422837A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353419A (en) * | 1980-11-28 | 1982-10-12 | Texaco Inc. | Method for manufacturing a well production and sand screen assembly |
| WO2008002679A2 (en) * | 2006-06-29 | 2008-01-03 | Bj Services Company | Method of repairing failed gravel packs |
| CN101929329A (en) * | 2009-06-26 | 2010-12-29 | 大港油田集团有限责任公司 | Gravel filling sand control device of horizontal well screen pipe |
| CN101705809B (en) * | 2009-12-11 | 2012-12-26 | 安东石油技术（集团）有限公司 | Segmented current controlling method of current controlling filter pipe column of oil-gas well having sand control pipe |
| CN103089194A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | Method for completing well by cementing top of expandable screen |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Xinhui Inventor after: An Changwu Inventor after: Liu Jun Inventor before: Sun Xinhui Inventor before: Liu Jun |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SUN XINHUI LIU JUN TO: SUN XINHUI AN CHANGWU LIU JUN |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20160706 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |